Force, motion and Inertia

What is Force ?

• Push and pull

• Gravity

• Kinetic

• Rotation

Which of the following forces attracts(orpulls)every object to the centre of the earth ?

• Frictional

• Muscular

• Rotational

• Gravitational

The tendency for an object to resist changes in it's velocity (speed and direction)

• Friction

• Inertia

• Motion

• Muscular

What is Periodic motion ?

• Motion using muscle

• The movement of an object in a circular path

• An object moving in a straight

• A motion repeated equal intervals of time

Objects need a ......to move

• Magnet

• Friction

• Motion

• Gravity

The.......the object, the stronger force needed to pull it down

• Higher

• Lighter

• Smaller

• Havier

Forces are ........., but we can see their effect

• Invisible

• Smell

• Rough

• Pull

Rough surface have more friction than.......

surface

• Rough

• Thin

• Smooth

• Thick

A force exerted by magnet is called......

• Friction

• Magnet force

• Muscular force

• Gravitational force

Which is the following is an advantage of friction?

• Noise in machines

• Wear out soles of shoes

• Light a matchstick

• Damage machine parts